fkie_cve-2022-50400
Vulnerability from fkie_nvd
Published
2025-09-18 14:15
Modified
2025-09-19 16:00
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
staging: greybus: audio_helper: remove unused and wrong debugfs usage
In the greybus audio_helper code, the debugfs file for the dapm has the
potential to be removed and memory will be leaked. There is also the
very real potential for this code to remove ALL debugfs entries from the
system, and it seems like this is what will really happen if this code
ever runs. This all is very wrong as the greybus audio driver did not
create this debugfs file, the sound core did and controls the lifespan
of it.
So remove all of the debugfs logic from the audio_helper code as there's
no way it could be correct. If this really is needed, it can come back
with a fixup for the incorrect usage of the debugfs_lookup() call which
is what caused this to be noticed at all.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: greybus: audio_helper: remove unused and wrong debugfs usage\n\nIn the greybus audio_helper code, the debugfs file for the dapm has the\npotential to be removed and memory will be leaked. There is also the\nvery real potential for this code to remove ALL debugfs entries from the\nsystem, and it seems like this is what will really happen if this code\never runs. This all is very wrong as the greybus audio driver did not\ncreate this debugfs file, the sound core did and controls the lifespan\nof it.\n\nSo remove all of the debugfs logic from the audio_helper code as there\u0027s\nno way it could be correct. If this really is needed, it can come back\nwith a fixup for the incorrect usage of the debugfs_lookup() call which\nis what caused this to be noticed at all."
}
],
"id": "CVE-2022-50400",
"lastModified": "2025-09-19T16:00:27.847",
"metrics": {},
"published": "2025-09-18T14:15:39.240",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/4dab0d27a4211a27135a6899d6c737e6e0759a11"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/5699afbff1fa2972722e863906c0320d55dd4d58"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/d0febad83e29d85bb66e4f5cac0115b022403338"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/d517cdeb904ddc0cbebcc959d43596426cac40b0"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/d835fa49d9589a780ff0d001bb7e6323238a4afb"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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